A propeller blade (18) spanning radially from a root (32) to a tip (34) and spanning axially from a leading edge (36) to a trailing edge (38) spaced from the leading edge forming an airfoil (39) therebetween where a sweep line (62) can be defined as a spline fitted through points which are positioned along the chord line. The propeller blade having at least one spline (40, 42) defining the leading edge or trailing edge.